pH 2.00 is a low-range pH meter calibration point. All Environmental Express® pH buffer solutions are manufactured under ISO 9000 quality guidelines and traceable to NIST standard (for meters with 0.01 resolution). A pH/temperature table is printed on the label for accurate calibrations.

If unopened, shelf life of pH 2.00 is 2 years; once opened, use within 90 days.

Store buffers away from direct sunlight.